list_box.h

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#pragma once
#include "layout/arranged_element_collection.h"
#include "border_style.h"
#include "list_control.h"
#include "selection_mode.h"

namespace xtd {
  namespace forms {
    class forms_export_ list_box : public list_control {
    public:
      using selected_index_collection = std::vector<size_t>;
      
      using selected_object_collection = std::vector<item>;
      
      list_box();

      virtual forms::border_style border_style() const {return data_->border_style;}
      virtual list_box& border_style(forms::border_style border_style);
      
      drawing::color default_back_color() const override {return xtd::forms::theme_colors::current_theme().window();}
      
      drawing::color default_fore_color() const override {return xtd::forms::theme_colors::current_theme().window_text();}
      
      drawing::size default_size() const override {return {120, 96};}
      
      object_collection& items() {return data_->items;}
      const object_collection& items() const {return data_->items;}
      const list_box& items(const object_collection& items) {
        data_->items = items;
        return *this;
      }
      
      using list_control::selected_index;
      list_control& selected_index(size_t selected_index) override;
      
      virtual selected_index_collection selected_indices() const;

      const item& selected_item() const {return data_->selected_item;}
      list_box& selected_item(const item& selected_item);
      
      selected_object_collection selected_items() const;
      
      virtual forms::selection_mode selection_mode() const {return data_->selection_mode;}
      virtual list_box& selection_mode(forms::selection_mode selection_mode);

      virtual bool sorted() const {return data_->sorted;}
      virtual list_box& sorted(bool sorted);
      
      using list_control::text;
      control& text(const xtd::ustring& text) override {return *this;}

      void begin_update();
      void end_update();
      
    protected:
      bool allow_selection() override {return data_->selection_mode != forms::selection_mode::none;}

      forms::create_params create_params() const override;

      void on_handle_created(const event_args& e) override;
      void on_selected_value_changed(const event_args& e) override;

      void wnd_proc(message& message) override;
      
      virtual void wm_reflect_command(message& message);
      
      virtual void wm_mouse_double_click(message& message);

      virtual void wm_mouse_down(message& message);
      
      virtual void wm_mouse_up(message& message);
      
    private:
      struct data {
        forms::border_style border_style = forms::border_style::fixed_single;
        object_collection items;
        item selected_item;
        forms::selection_mode selection_mode = forms::selection_mode::one;
        bool sorted = false;
      };
      std::shared_ptr<data> data_ = std::make_shared<data>();
    };
  }
}